This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 213 |
| 2 | 215 |
| 3 | 299 |
| 4 | 411 |
| 5 | 1133 |
| 6 | 1135 |
| 7 | 1343 |
| 8 | 1345 |
| 9 | 1383 |
| 10 | 1385 |
| 11 | 1387 |
| 12 | 1685 |
| 13 | 1793 |
| 14 | 1835 |
| 15 | 1837 |
| 16 | 1891 |
| 17 | 1937 |
| 18 | 1939 |
| 19 | 1957 |
| 20 | 2045 |
| 21 | 2315 |
| 22 | 2317 |
| 23 | 2513 |
| 24 | 2567 |
| 25 | 2807 |
| 26 | 2809 |
| 27 | 2929 |
| 28 | 3091 |
| 29 | 3093 |
| 30 | 3095 |
| 31 | 3097 |
| 32 | 3147 |
| 33 | 3149 |
| 34 | 3647 |
| 35 | 3957 |
| 36 | 3977 |
| 37 | 3979 |
| 38 | 4115 |
| 39 | 4313 |
| 40 | 4315 |
| 41 | 4411 |
| 42 | 4529 |
| 43 | 4531 |